Specific safety information for managing incidents involving refrigerants and other chemicals like inhalation, fires, spills and more can be found in the Significant New Alternatives Policy or SNAP which is put out by the Environmental Protection Agency or EPA.
Answer: The G1 or start check point is the primary point of cell cycle that is influenced byexternal signals
Explanation:
Cell cycle check point are processes in eukaryotic cells that allows adequate cell divisions. They serve as potential points along the cell.
There are three types of cell cycle check points and they are;
1.G1 check point also know as restriction or major or start check point.
2. G2 check point.
3. Metaphase or spindle check point. The G1 or start check point is the primary point of cell cycle that is influenced by external signals.
Adaption, evolution, variation are all causes of natural selection.
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brainliest..?
Answer:
A) ozone
Explanation:
Ozone is a secondary pollutant, that is, it is not emitted directly, but formed from other air pollutants, and highly oxidizing in the troposphere (lower layer of the atmosphere). Ozone is found naturally in the stratosphere (layer located between 15 and 50 km in altitude), where it has the positive function of absorbing solar radiation, preventing most of the ultraviolet rays from reaching the Earth's surface.
The formation of tropospheric ozone occurs through complex chemical reactions that take place between nitrogen dioxide and volatile organic compounds, in the presence of solar radiation. These pollutants are emitted mainly in the burning of fossil fuels, fuel volatilization, animal husbandry and in agriculture.